Boiler.



PATENTBD MAY 31, 1904.

AHLl PERT.

BOILER. APPLIOATION FILED DB0.- 21. 1900.

2 SHEETS-SHEET 2.

N0 MODEL.

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t UNITED :STATS Patented may 31, 1904.A-r

ATENT GFF-ICE.

"'BQIL'ERL.

SPECIFICATION for'ning part of Lettere Patent No. 761,394, dated May 31, 1904.

' i Applicaties niet Deeemiierzi, 1900. .serial Ne. 40,641. (No modem A To alwhom/ t Maginon/cern:

" -Be it known that I, ALEXANDER J. PEE'r, a

citizen of the United States, and a resident of `the boroughr'of Brooklyn, in the county of -Kings and State of New York, have invented certain new and useful Improvements in Boil- 1 ers,` of'which theffol'lowing is a specification.

. This invention relates to means for the eco? nomical production of steam. Its. Objectis the production ofl boilers which will be compact lin form, with large steaming '.capacity, hght in weight, and accessible .for-repalrs. Figure 1 represents a vertlcal section of the j boiler on the line a m of Fig. 2. Fig. 2 shows a fragmentary top View and a section on the line y yof Fig. 1. Fig. 3 is a fragmentary sideview of the boiler, takenon a plane at right-angles to the section shown in Fig. 1.

i Fig. .4 represents a View of two adjacent steamcoils as seen when looking'in a direction ofl the line @c .fn of-Fig. '2. Fig. 5 shows a top View ofthe hollow stand .of the boiler. Fig.

with the'TvB, which contains the separating plate o, perforated with the holes To the T are secured the pipes C, closedat their ends with the plugs D. vThe T with pipes C constitute the steam-dome. vThe central column A is carried on the yhollow stand E,

to which is Vsecured the ring-plate bottom F. Steam-coils H are screwed into the central column by means of the fittings the said fittings being first screwed on the ends of the coils and then screwed into the. central column, the

threads on the external and internal surfaces of the fittings being right and left to each other.

The convolutions of the coils H are oblong in plan View and enlarge in diameter from their inner to their outer ends, and in vertical elevation theyeach take the shape of a helix. The coils are secured to the central column so as to interlace each other, as shown in Figs. 2 and L1, the pitch of the coils allowing one coil to be interposed between the members of the next adjacent coil. By this disposition any of the coils can easily be revof more than one circular row ofcoils.

more than one row of concentric coils are 1nmoved, and a great many coils can be put in a small volume of space. To vary the capacity of any boiler, the lengths of the coils as measured on horizontal planes are increased or decreased, avoiding thereby the necessity If repairs.

The coils are surrounded by the circular shell G, which is capped with the smoke con- `nection If To the'inn'er face of the shell G issecured a non-conducting lining J. An

trod`uce'd, 'they would not be accessible for outer casing L encircles the shell G and a nonconducting iilling'K isinterposed between them.

In the plugs D aretapped pipes M, on which is loosely supported the dry pipe N, the latter being perforated with numerous holes n for the passage of the steam from the steam-dome int'o said dry pipe Vand by which it is conducted into the pipes M.

In the hollow stand E is cast the boss e, l

whichcontains two openings entirely through the same.` In the lower end of one opening the oil-pipe O is secured, and into the opposite end of said opening the coil P is fastened, running from there in a spiral up the central column A, and returningto the inside of the hollow stand E at 0. The boss e contains a second opening for the water-inlet pipe Y. A secondary boss c is cast with e, which contains an opening extending from the outside of the stand E to the inside of the same, and into the opening of this secondary bossV the oil-outlet pipe R is secured. Legs e2 extend from the stand E, and the braces U are fastened to the said legs for securing the boiler in place. l

Surrounding the legs of the stand E, and on the top face of the leg f of the ring bottom plate F is placed the burner T, which contains numerous openings t.

Vplaced a needle-valve S. The'pipe R extends from the inside of the hollow stand E to the needle-valve.

The leg f of the ring bottom plate is perforated with holes f2 and slots f3. On the top of said leg there is placed an annular ring It is provided with a mixing-chamber T', into the end of which isy IOO F with holes f4 and projecting pins f5, which constitutes the damper.

To the bottom of the stand E is fastened the reservoir V for alcohol or a similar fluid to start the burner.

A water-column X, with water-glass m', is secured in place, with the piping oe3 extending from the steam-dome C, and the piping m2 running to a fitting y in the water-inlet pipe Y.

To generate steam, the boiler is first charged with water through the pipe Y, after which oil is forced through the pipe O and into the coil P. Then a charge of alcohol in the reservoir is lighted to heat and vaporizethe oil in the coil P. The oil finds its way into the pipeR to enter the mixing-chamber T through the valve S, where it mixes with the air drawn into the mixing-chamber, and the mixture is forced through the holes t' in the burner, where it is lighted and heats the water in the steam-.coils H. By means of the damper the amount of air admitted to secure perfect combustion is regulated. The steam leaves the coils at their upper ends, and enters the central column A under the separating-plate b of the T B, and passes through the holes b to enter the steam-dome, from which it enters the dry pipe N,and is finally led into the pipes M,which convey it t0 any desired point. The products of combustion pass up about the coils and enter the smoke connection I, by means of which they are carried away.

Having described my invention, I desire to secure by United States Letters Patent and claim-- l. A boiler comprising a central water-column, helical coils secured thereto at their top and bottom ends, the coils interlocking with each other, a stand fastened to the bottom end of said central water-column, a fuel-coil entering from said stand and into the central water-column, a shell encircling the steamcoils, a smoke connection capping the said shell, a bottom plate with damper secured to the stand, and a burner above said bottom plate.

2. A boiler eomprisinga central water-column, spiral coils secured thereto at their top and bottom ends, the coils interlocking with each other, a hollow stand fastened to the bottom end of the water-column, a fuel-coil extending from the said stand and into the central water-column, a shell encircling the steam-coils, a smoke connection capping the said casing, a bottom plate with damper secured to the stand, a burner encircling the stand and supported on said bottom plate, a valve secured to the burner, an oil-supply pipe extending from the hollow stand to the valve.

3. A boiler comprising a central water-column, interlocking steam-coils secured to the water-column, the convolutions of which are helical in elevation and, in plan view, increase in diameter from their inner to their outer ends, a hollow stand fastened to the bottom end of the water-column, a fuel-coil running from a boss extending through the stand and returning to the inside of the same, an oilsupply pipe leading to the oil-coil, a watersupply pipe connected to an opening running through the stand, a fuel-outlet pipe extending from inside of the said stand, a reservoir under the stand, a shell surrounding the steamcoils, a smoke connection capping the shell, a T with perforated plate secured to the central water-column, pipes fastened to the T, plugs secured into the ends of the said pipes, steam-pipes tapped into the plugs, a perforated dry pipe connecting the inner ends of the steam-pipes, Ya bottom plate with damper secured to the stand, a burner encircling the stand, a mixing-chamber fastened to the burner, a needle-valve supported in the mixing-chamber, a fuel-pipe extending from the stand to the needle-valve.

Signed at New York, in the county of New York and State of New York, this 17th day December, A. D. 1900.

ALEXANDER J. PEET.

Witnesses:

G. W. BRANDT, FRANK T. GRAY. 

